The "rule of thumb" to ensure an extension ladder has the correct angle is: The base of the ladder must be _____________' from the wall for every____________' of ladder length.
A. 1, 3
B. 1, 4
C. 1, 5
D. 1, 6
Answer: B
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The kindling temperature of steel in pure oxygen is about ____.
A. 600 degrees F to 800 degrees F B. 1200 degrees F to 1400 degrees F C. 1600 degrees F to 1800 degrees F D. 2000 degrees F to 2200 degrees F
Of the following combination of values, ________, ________, and ________ leads to the highest risk.
A. Low financial investment; high uncertainty; low hazard B. Low financial investment; low uncertainty; low hazard C. High financial investment; high uncertainty; high hazard D. Low financial investment; high uncertainty; high hazard
Determine the expected rut depth of the fourth layer of a 4” thick HMA flexible pavement surface divided into four equal sub-layers for the following conditions: Resilient or elastic strain calculated by the structural response model at the middepth of each HMA sub-layer, in/in = 45 × 10-6 Number of axle load repetitions = 1.5 × 104 Mixture field calibration constants below:
?1r, = 0.99 ?2r, = 0.98 ?3 = 0.95 What will be an ideal response?
Fish filter _____ from the water through their gills.
Fill in the blank(s) with the appropriate word(s).